Wrench.



i smit-Es IArENgr 'orme RALPH w. CROSBY, or os'rnnvimn, ivrassaonusnrrs.

WRENCH.

1'.,1'f74-3la specicati'on'ci` Iietterstent. Patented Mar. 7, 1916. appiicatioaaledaplie, 1912,*- seriaiuo. 21,109.

To allzu/Omit may concern.'

` .jlBe it knownjthatl, RALPH' W. CROSBY, a

citizeny of.v the United "States, residing/MQ Osterville, in the county ofzarn'stable and i Stateof Massacjhusetts,' have invented cetain new and useful' Improvements in ,'Wrenche`s, ofvvhieh` the following is a.. speciiicati'on.

My invention vrelateslto improvements in .wrenches and "An object of' 'inventionf is to' provide for a speedy and ea'syfadjustment ofthe movable 'jaw'to andl thevread.' A firther object 4ofthe invention '1s to y provide the-,coacting jaws, each with' alongitudin'al and a transverse groove, the grooves,

l .as pointed out hereinafter,permitting-each j aw to positively engage two sides of allele.'

. agonal or polygonalnut.

As a further Object of, theimgenadq 1 contemplate a, wrench; strue'ture'in which the stresses and strains incidentto its 'use' are directly borne by theadglustment means therefor.

I still further contemplate a 'socket wrench in which the correlated vjaws are joined' and adjusted'in va novel and peculiar mannerwhereby'ease and facility in operation. have been perfectedto amainmum degree.

The above and additional objects are-ac? complished by such means `asare illustrated in their preferred embodiment in the accompanying drawings, described in the following'speciica-tion and then more particularly pointed out in thelclaims which are'A appended hereto and form 'a part of this application.'

In describing my Iinvention in detail ref erence will` be had to the accompanying drawings wherein like characters denote llkeor corresponding parts throughout thesevnut having been indicated by dotted lines.' l

Referringnow tothe drawings by nu- .'mera'ls, 1 designates'as an .entirety the'xed 'jaw o'f 'the wrench and 2 as an entirety .the

I movable jaw. "The fiXedj'aw 41 in `its prefer'redy embodiment may be said to' consist" ofa polygonal shank portion' 3,a laterally particularly wrenches of the 'i g'groovedconnecting portion 4, the groove eing designated 5 and the jaw itself desig Iiated'dY I vThe adjustable jaw 2. ofl the wrench' may ybe said to consist ofa body portion 7 provided with a central opening through which the connecting portion e: the stationary jaw 1 extends. The jawfproper is designated 9, and is opposed to the. mentioned jaw 6, each jaw being longitudinally grooved (V-shaped) to engage with two sidesv of a hexagonal or polygonal nut as shown to advantage .in Fig.' 5 of the drawings.

The grooves last referred to have been des-A ignatedxlO in the drawings. The sides of the body portion 7 have been designated 11,

said sides being of a dove-tailed formation incross sectionwhereby to fit complemental Vgrooves'lQ l'therefor formed in the fixed jaw. lAsaineans whereby the dove-tailed sides 11 A Amay be held against Vvertical displacement I v'provide 'retaining blocks 13 of especial size and design, the blocks being located at op-y posite sides ofthe fixed jaw 1 and fitting the groove 5 'above mentioned, suitable positive 4 fastening means such as indicated at 14 serving to 'maintain the blocks in place.' That portionof the ladjustable jaw 2 designated 15, andconneeting the sides 11 acts as a stop or Vabutment to limit movement of the adjustable'jaw. A screw 16 `penetrates the connecting or abutment portion of themovable jaw 2, the screw being affixed to the connecting portion 4 of the `stationary :aw and' threadedly engaging vthe adjustable vJaw 2 whereby to move the latter longitudinally of the fired jaw and relatively thereto through manipulation of the screw.' :By loeating the screw as abovepointed Outland v` as shown to advantage in Fig. lof the draw ings it Vis apparent 'that the stresses and strains incident to the use of the wrench are bornedirectly thereby.` Any suitable operatinf.,r element such a's. shown at`17 may be pivotally secured as at 18 to the screw 16 whereby to facilitate manipulation or ope1 av v be. The shank -3 isf'to be engaged by a .mentioned body portion and engaging ivith; l `Wrench yor the like tool subsequent lto arrangement of the herein described' device as above pointed out..

Fromthe foregoing, taken', in connection.

with the accompanying drawings Ait Will be noted that the socket Wrench herein dis-v n closed comprises but afelvv simpleparts, any

or either of which may be replaced with. ease ,should .a contingency arise; that undue movement of the correlated WrenchV parts does not exist, this vfor the reason' thatthe adjustable jaw vis arranged to embrace the vfixed jaw, iiivvhich position it is fixed against movemntjother than longitudinal;

i and t-hatthe mode ofadjustment here vset (Ionica o1 Ithis patent'may be obtained for forth is'such-in its nature as to receive, as before pointed out, almost the entlre Vstrain incident to use or operation ofthe Wrenoh. ,n 20

Having vthus fully described my invention, what I claimasnew anddesire to secure by Letters Patent, is

' 1, In awrench, a fixed aW, a right angle longitudinally grooved bo y portion integral with said jaw, a reduced vshankformed at the opposite end of said body portion, a movable jaw, a right angle body portion integral with lthe movable jaw, said last mentioned body portionbeing disposed to overlap and t the' groove in the said first mentioned` body portion,.said last mentioned body por- .tion having an opening formed therein to receive the shank aforesaid, removable plates carried by said shank to engage with andv maintain said last mentioned body portion in engagement with the mentioned grooves, and a means carried bysaid last 'said shank to adjust the movable jaw.

formed at the oppositeendof said kbody pori tion, a movable, jaw,a bodyportion integral with said `movablejaw,'said last Vmentioned l 5y rg engage with the rstfmentionedbody por-, tion, said last mentioned body portion havbody portion being disposedto overlap and 4 ing an opening formed 'tl'ierein 'through shank to vengage with 'and maintain said last f Vvvhich the shank aforesaid entends, lande i mentioned body portion in engagement.with

the body portion first mentioned, and a means carried bysaid last mentioned body 6 portion and engaging said shank to adjust the movable jaw. Y y .A

In testlmony whereof I affixA my signature 1n presence of two rmt-messes. 1 f

Witnesses:

EDGAR F. Scuro. Evin: nr'r F.. l*`i7i.i.,t;ii.

Washington, D, C.

f RALPH l onosenj' 

